Surf fin



FIG. 1 is a front perspective view of a surf fin according to the present invention.

FIG. 2 is a bottom plan view of the surf fin illustrated in FIG. 1.

FIG. 3 is a top plan view of the surf fin illustrated in FIG. 1.

FIG. 4 is a side elevation view of the surf fin illustrated in FIG. 1.

FIG. 5 is another side elevation view of the surf fin illustrated in FIG. 1.

FIG. 6 is a cross sectional view of the surf fin taken through line 6-6 of FIG. 7.

FIG. 7 is a rear elevation view of the surf fin illustrated in FIG. 1; and,

FIG. 8 is a front elevation view of the surf fin illustrated in FIG. 1.

The broken lines show a fastener that form no portion of the claimed design. 

CLAIM The ornamental design for a surf fin, as shown and described. 